Land-marker.



A. DAHLBBRG.

LAND MARKER. 4 APPLICATION FILED 1330.2, 1912.

2 SHEETS-SHEET 1.

Patented Feb; 24, 191

A. DAHLBBRG. 4

LAND MABKERL APPLICATION FILED 1330.2, 1912.

Patented Feb. 24, 1914.

2 SHEETS-SHEET 2.

, IIEIIIIIIII Illllll l I I 1 4 I ll O O O ANDBEXV DAHLBEBG, OF WYOMING, MINNESOTA.

LAND-MARKER.

tyftdd etth'i.

Specification of Letters Patent.

Patented Feb. 2d, 1914..

Application filed December 2, 1912. Serial No. 734,538.

To all whom it hwy concern Be it known that 1, ANDREW DAHLBERG, a citizen of the United States, residing at it. No. 2, Wyoming, in the county of Chicago and Sta to of Minnesota, have invented certain new and useful Improvements in Landlnarkcrs, of which the following is a specification.

This invention relates to improvements in land markers and its object is to produce a device of this class whose markers are formed with a plurality of marking blades of varied sizes; each of the said markers being removably disposed in a frame and means being provided for readily substituting one blade for another.

VJith the foregoing and other objects in view the invention consists in the combination and arrangement of parts to be hereinafter fully described in the following specification, pointed out in the claims and illustrated in the accompanying drawings which form a part of the said specification and in which- Figure l is a plan of my improved land marking device. Fig. 2 is a detail of a sup porting block employed. Fig. 3 is a detail of the removable marker-supporting means. Fig. 4 is a section taken through the hub of one of the markers showing the pivoted stop pin employed. Fig. 5 is a side elevation of the complete machine. Fig. 6 is a plan of Fig. 4. Fig. 7 is an end elevation of one of the markers. Fig. 8 is a rear elevation of the machine. Fig. 9 is a section taken on line 99 of Fig. 1.

Like reference characters indicate corresponding parts throughout the several views.

My machine comprises a frame formed with front and rear ends 1 and 2, respectively, and with lateral members 3 and further, transverse connecting members 4 and l and with suitable braces 5. To the front frame member 1 brackets 6 supporting a shaft 7 are disposed and on said shaft curved supports 8 are secured that carry the axle 9 of traction wheels 10, which wheels are further connected to the curved supports 8 by braces 11 connecting the axle 9 and a pin 12 that passes through the curved supports 8 and through an elongated slot in a lever 13 pivoted in a bearing 14: disposed upon frame member 4; the said lever being adapted to work over rack disposed upon a table 16 secured to frame member 4:". By

raising the lever 13 the wheels 10 may be raised off the ground when desired.

Within the frame of the machine a plurality of markers are removably disposed; each marker being arranged upon ashaft 17 and preferably formed with four marking blades 18 radiating from the shaft and disposed successively at right angles to each other, the ends of the blades varying in thickness in order that markings of different widths may be obtained by using different blades. One end of shaft 17 is connected to a hub 19 that is provided with a metallic channel 20 in which a pin 21 is disposed that is provided with a spring 22 that abutsthe hub; said pin having one end disposed against a block 23 formed with a shaft 24: which is square in cross section and adapted for insertion in a square aperture in the frame of the machine to prevent rotation of said block. A hearing 25 is disposed upon the block 23 and provided with a pivoted stop pin 26 that when in a horizontal position abuts the hub 19 to prevent its longitudinal movement toward the block 23 and that when in its vertical position permits such movement. Castings 27 secured to the marker support the blades of the same and a stationary shaft 28 is carried terminally by the marker for insertion in an aperture in the rear frame member 2 which is further apertured for the reception of pins 29 adapted to register with apertures in the marker to prevent rotation of the same when in position.

To remove a marker from the frame the marker is manually pressed toward the front end of the machine, after the stop pin 26 has been raised, against the tension of the spring 22 until the pins 29 are drawn out of en gagement with the marker when the same may be readily removed. When it is desired to change from one marking blade to another the marker is pushed forward and then oscillated through an arc of 90 degrees when another blade will be in position. Normally spring 22 will keep the marker in operative position against accidental displacement.

What is claimed is 1. In a ground marker, a frame, traction wheels supporting said frame and movable independently thereof, markers formed with dissimilar blades rcmovably secured within said frame and means connecting said frame and markers whereby partial rotation of the latter may be accomplished to substitute one marker-blade for another.

2. In a ground marker, a frame, traction wheels supporting said frame and movable independently thereof, markers having dissimilar blades removably secured within said frame, means connecting said frame and markers whereby partial rotation of the latter may be accomplished to substitute one marker blade for another and pivoted -stop pins carried by said means for engagement with said markers to prevent accidental displacement of the latter.

8. In a ground marker, a frame, traction Wheels supporting said frame and movable independently thereof, stationary blocks secured to said frame, markers having dissimilar blades removably disposed between said blocks and the opposite end of the frame and pivoted arms secured to said blocks and normally engaging said markers for preventing accidental displacement of the latter.

In testimony that I claim the foregoing as my own I have hereto afliXed my signature in the presence of two subscribing witnesses.

ANDREWV DAHLBERG.

WVitnesses EMIL LARSON, EDNA LARSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, I). C. 

